Apparatus for quenching coke from horizontal coke ovens



Feb. 6, 1968 w. CREMER 3,367,844

APPARATUS FOR QUENCHING COKE FROM HORIZONTAL COKE OVENS Filed Sept. 5,1963 2 SheQLs-Sheei l I ll R INVENTOR. W4L 7f? CREME? 2 Sheets-$nee W.CREMER Feb. 6, 1968 APPARATUS FOR QUENCHING COKE FROM HORIZONTAL COKEOVENS I Filed Sept. 5

N mm INVENTOR. W41 TEA CPL-"MEX? United States Patent Ofiice 3,367,844Patented Feb. 6, 1968 3,367,844 APPARATUS FCR QUENCHING COKE FROMHORIZUNTAL COKE OVENS Walter Cremer, Essen, Germany, assignor, by mesneassignments, to Koppers Company, Inc., Pittsburgh, Pa,

a corporation of Delaware Filed Sept. 5, 19-63, Ser. No. 306,734 7Claims. (Cl. 202-427) ABSTRACT ()1? THE DHSCLOSURE Apparatus forquenching coke comprises an inclined rotatable vessel that is movablealong a coke battery and is communicable with a coking chamber about tobe pushed. Quenching water is sprayed onto the hot coke in the vesseland the generated steam, containing dust particles, passes through adust separator to remove the dust particles. The quenched cokedischarges onto a moving belt conveyor.

The present invention relates to an apparatus for quenching coke fromhorizontal coke ovens in an inclined vessel which may be moved in frontof the oven battery and is provided with a stack for the quenchingsteam.

The coke is quenched in the usual manner by transferring the glowingcoke from the oven chamber through a coke guide means into a quenchingcar which may be moved in front of the oven battery. The coke is thenquenched in the quenching car with large amounts of water in a cokequenching apparatus.

Large amounts of dust and smoke are formed when the coke is pushed intothe quenching car. This pollutes the surroundings. Another pollution ofthe surroundings occurs by the quenching of the coke in the quenchingapparatus, in the course of which the quenching steam suddenly producedin large amounts entrains large amounts of coke particles which go intothe atmosphere it special apparatus are not provided in the quenchingtower for precipitation of these particles of coke.

The coke guide apparatus has been lined with a jacket to prevent anescape of dust. A prerequisite for a complete freedom of dust, however,is the covering of the quenching car. This is difficult and expensive asa result of the slow transfer for the purpose of a uniform distributionof the coke.

It is also known that the coke may be introduced into an inclinedvessel, which is connected directly with the coke guide. The coke issprayed with water in this inclined vessel and a stack is connected toit for discharge of the quenching steam. However, the problem oftransferring the coke without dust into the quenching apparatus and ofpreventing a discharge of coke particles from the stack for thequenching steam during the quenching is not solved by this. 7

The present invention now consists in using as quenching vessel a rotarydrum which is connected with the opening of the oven chamber withintermediate position of a retaining chamber which receives at least thecontents of one oven chamber. The retaining chamber is connectedessentially gas-tightly to the sealing frame of the oven with a sealingedge.

The quenching of the coke in the rotary drum, into which the coke istransferred in thin layers, takes place according to the presentinvention by means of nozzles which are mounted in the front part. Themain amount of quenching water is sprayed through these nozzles.

The smaller pieces of coke that are saturated with large amounts ofwater come in contact with the larger pieces of coke by the slow,regulable rotary motion of the rotary drum. This results in acomparatively rapid exchange of heat and liberation of the water.According to the invention, a spray means is arranged in the back partof the rotary drum. The residual amount of water necessary for asatisfactory quenching is sprayed through this spray device.

According to another characteristic of the invention, the amount ofresidual quenching water is controlled by a temperature regulator whichmeasures the temperature of the coke before this quenching zone, so thatthe amount of quenching water may be held to the minimum amountnecessary for a lowest possible content of water and the water contentof the quenched coke is adjusted at a minimum amount.

The coke is then continuously discharged from the outlet of the rotarydrum through a sluice corresponding to the output of the drum.

The invention is illustrated in the accompanying drawings by way ofexample.

FIGURE 1 illustrates a quenching apparatus which moves in front of theoven chamber.

FIGURE 2 is a side view of FIGURE 1, showing a cross-section through theoven battery.

The oven battery 1 consists in the usual manner of a number of ovenchambers 2 arranged side by side. A coke quenching apparatus 4 ismovably arranged in front of the oven battery on guide wheels 3. Thecoke quench-ing apparatus consists essentially of an inclined rotarydrum 5 and a retaining chamber 6 lined with fireproof structuralmaterial and connected to drum 5. Chamber 6 receives all of the coke tobe pushed from oven 2.

Chamber 6 has a telescopic part 8 that is capable of being pressedagainst the sealing frame 7 of the oven. A gas-tight connection withoven chamber 2 is provided by this telescopic part 8. Chamber 6 istapered at the bottom and proceeds in this tapered part [9 inclinedly inthe stationary headpiece 10 of the rotary drum 5, into which the coke isgradually introduced corresponding to the rotary motion. The headpiece10 is also provided with an opening 11 to which is connected a stack 12for the quenching steam. A dust separator 13 of any optional structureis connected with discharge stack 12. An exhauster 14 is, in turn,connected to the dust separator 13 and i provided with a discharge pipe15.

Quenching water supply pipes 16 pass through the headpiece 10 of therotary drum 5. Spray nozzles 17 are provided on the ends of supply pipes16. These spray nozzles are arranged in the front part of the rotarydrum. One or more spray nozzles 18 are arranged in the back of the rotaydrum and are connected to a water line 20 which passes through thedischarge part 19. A discharge means 21 is arranged in the stationarydischarge part 19. Discharge means 21 may consist of a bucket wheel orthe like and transfers the coke to a conveyor belt 22 in accordance withthe capacity of the rotary drum. The quenched coke is transferred fromthe conveyor belt 22 by another conveyor belt 23 either to an existingcoke whart or directly to the screening apparatus.

The amount of water that is introduced through the quenching-waternozzles 17 is slightly below the amount that is necessary for thecomplete quenching. The quenching begins immediately with the pushing ofthe coke from oven 2 by pusher rod 24. All pieces of coke arealternately brought in contact with one another during the rotary motionof the rotary drum 5, so that an exchange of heat occurs. The amount ofresidual water, which is still required for the coke, is determined by atemperature measurer 25 which projects in the coke shortly before thequenching zone of the spray nozzles 18. The supply of the amount ofresidual water is then regulated by regulating means 26 arranged in thequenching water line 20. The quenching vapors are exhausted by means ofexhauster 14 with separation of entrained coke particles in the dustseparator 13. If desired, the quenching steam may be utilized in a heatexchanger and then discharged into the atmosphere through discharge pipe15. The amount of quenching steam to be exhausted in a unit of time andthe pressure in the rotary drum determined thereby are automaticallyregulated by a pressure regulator either by throttle valve 27 or byregulation of the number of revolutions of exhauster 14. After thepushing of the coke is completed, the quenching apparatus is closedessentially gas-tightly by a valve 28.

A quenching-water channel 29 is arranged along the oven battery. Theexhaust connections 30 of a line 32 provided with a quenching-water pump31 proejct in channel 29.

A discharge 36 is connected to dust separator 13 and is provided with asluice 37, through which the separated coke dust is conveyed into therotary drum.

A customary door lifting device 33 may be connected with the quenchingapparatus. After removing the door from the oven chamber, the door isswung aside by 90 by means of the door lifting device 33, in order tobring the telescopic end 8 of the retaining chamber 6 adjacent to theoven chamber.

The revolving speed of the rotary drum 5 is regulable corresponding tothe desired rate of transferring the coke.

I claim:

1. Apparatus for receiving and quenching hot coke being pushed from ahorizontal coking chamber of a coke battery comprising:

(a) a receptacle that is movable to a position adjacent a respectivecoke chamber and having an inlet opening for passing into the receptaclehot coke being pushed from said coke chamber;

(b) an inclined rotatable vessel having one end communicating with saidreceptacle so that said coke discharges from the receptacle into saidinclined rotatable vessel, the vessel being movable with said receptacleinto a position adjacent a respective coke chamber;

(c) means for rotating said inclined vessel whereby said hot coke,entering said inlet end and producing solid particulate matter in theatmosphere, moves downwardly and away from said inlet end toward a lowerdischarge end;

((1) means for closing the discharge end of said vessel;

(e) means within said inclined vessel to wet and quench said hot cokethereby producing steam within said inclined vessel;

(f) means for temporarily sealing gas tightly the receptacle inlet tothe coke chamber while said receptacle is located adjacent said cokechamber;

(g) means for conducting the steam and the solid particulate matter outof said inclined vessel;

(h) means in communication with said conducting means for separating thesolid particulate matter from the steam;

(i) an exhauster communicating with said separating means for removingsaid steam and dust particulate material from said vessel; and

(j) means for removing the quenched coke from said inclined rotatablevessel.

2. The apparatus of claim 1 including:

(a) a temperature measurer disposed at a location in said vesselintermediate said first and second zones for sensing the temperature ofsaid coke subsequent to first quenching; and

(b) a regulator disposed outside of said vessel and responsive to saidtemperature measurer for controlling the amount of residual quenchingwater supplied to second sprays whereby the amount of said residualwater supplied is a minimum.

3. The apparatus of claim 1 wherein:

(a) said means for discharging the quenched coke from said vesselincludes a rotary bucket wheel; and including (b) a belt conveyor forreceiving said discharged coke and conveying it away from said vessel.

4. The apparatus of claim 1 wherein:

(a) said means for conducting steam and solid particulate matter is astack.

5. The apparatus of claim 1 wherein:

(a) the means for sealing gas tightly the receptacle inlet to said cokeoven includes (i) a first tubular element fixed to said receptacle and asecond tubular element that telescopes within said first element andabuts against the face of said coke oven chamber, and

(ii) a valve that is movable and positionable in said second tubularelement to prevent the passage of gases through said first and secondtubular elements.

6. The apparatus of claim 1 wherein:

(a) the means to wet and quench said hot coke includes first watersprays disposed in a first zone in said vessel near the inlet endthereof for supplying a major amount of water to quench said hot coke asit is first introduced into said vessel;

(b) second water sprays disposed in a second zone in said vessel nearthe discharge end thereof for supplying a residual amount of quenchingwater to said coke; and including (c) means to close the inlet openingof said receptacle after coke has been pushed therethrough to make saidchamber substantially gastight.

7. The apparatus of claim 6 wherein (a) said means to close the inlet ofsaid receptacle includes a movable valve.

References Cited UNITED STATES PATENTS 1,602,819 10/ 1926 Jakowsky202227 X 2,785,115 3/1957 Borch 202227 X FOREIGN PATENTS 14,511 3/1929Australia. 20,144 10/ 19 10 Great Britain.

JOSEPH SCOVRONEK, Primary Examiner.

